I'm in the process of mounting a used fiberglass tub onto a cj-5. My question is this. I didn't notice any special mounting brackets when the guy took it off the frame. The bolts went staight through the body into to cab. If you look in the "four wheel drive hardware" catalog, it says that you have to use that special mounting kit. Is this really necessary? I have a brand new polyurithane body mount kit. And why is there that 24" rubber that they sell with the kit? Where do you put that, and do you really need it? Ok, last question. I've been looking to add a 1" body lift also, but all the kits I see say that they will not work with fiberglass tubs. Why is that. Any help would be appreciated.